10111721201012003407Page22 Figure5leftIndoorandrightoutdoorcomparisonofanelectrowettingADTandareectiveLCDeightsegmentdisplayThereectivityoftheelectrowettingsetupissignicantlyhigherl ID: 319890
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10.1117/2.1201012.003407Page2/2 Figure4.Subtractivecolormixtureofcyan,magenta,andyellow(CMY)for2mmelectrowettingpixels.Thecolorsarebrightandsat-uratedcomparedtootherreective-displaytechnologies.K,W,R,B,G:Black,white,red,blue,green. Figure5.(left)Indoorand(right)outdoorcomparisonofanelec-trowetting(ADT)andareectiveLCDeight-segmentdisplay.Thereectivityoftheelectrowettingsetupissignicantlyhigher.lx:Lux. advantagesarevividcolorsandaprinter-likecolorrangeforbillboards.Animportantissueforallkindsofdisplaysisread-abilityinvariousambientlightingconditions(seeFigure5),rangingfromindoorsettingstobrightsunlight.Theimagequal-ityofemissivedisplayssuchasplasmaandbacklitLCDscreensdegradeswithincreasingilluminance.Reectivetechnologieshaveadvantages,butmostofthoseapproacheslackgoodcolorreproduction(widegamut).TheADTdisplaysarereadablefromdark-roomambient-lightconditions(backlit,whichisnotpossi-bleforotherreective-displaytechnologieslikeelectrophoretics)topurereectiveindoorandoutdoorconditions.Wehavedevelopedarangeofbistabledisplaysbasedonelectrowetting,andrecentlyestablishedaproductioncompany. Ourdisplaysaresuitableforuseinawiderangeofapplica-tions,fromLEDreplacementstoelectroniclarge-areabillboards.`Nopower,'sunlightreadability,awidetemperaturerange,andexcellentcolorreproductionareamongtheiruniquefeatures.Othercurrenteffortsbyourteamincludeintegrationofin-celltouchfunctionality,aswellassystemandproductionimprove-ments.AuthorInformation KarlheinzBlankenbachPforzheimUniversityPforzheim,GermanyKarlheinzBlankenbachjoinedPforzheimUniversityasafullprofessorin1995andfoundedtheDisplayLaboratory.Hismainresearchanddevelopmenteffortsareindisplaydrivingandsys-tems,aswellasdisplaymetrology.HeischairoftheElectronicDisplaysConferenceandmemberoftheboardoftheGermanFlatPanelForum.JuergenRawertAdvancedDisplayTechnologies(ADT)GmbHBadSoden,GermanyJuergenRawertisapharmacistandholdsanMBAdegree.Heworkedfor10yearsinresearchandbusinessdevelopmentatDegussaAG.HesuccessfullyparticipatedinsettingupseveralstartupcompaniesbeforejoiningADTasbusiness-developmentdirector.References 1. G.BeniandS.Hackwood,Electrowettingdisplays,Appl.Phys.Lett.38,pp.207–209,1981. 2. R.A.HayesandB.J.Feenstra,Video-speedelectronicpaperbasedonelectrowetting,Nature425,pp.383–385,2003. 3. K.Blankenbach,A.Schmoll,A.Bitman,F.Bartels,andD.Jerosch,Novelhighlyreectiveandbistableelectrowettingdisplays,J.Soc.Inf.Display16(2),pp.237–244,2008. c 2010SPIE